<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <br />

    <el-card>
      <el-row>
        <el-col>
          <el-button type="primary">添加角色</el-button>
        </el-col>
      </el-row>
      <!-- 角色列表 -->
      <el-table :data="rolesList" border stripe>
        <!-- 添加展开列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row
              :class="['bdbottom',i1===0 ? 'bdtop' : '','vcenter']"
              v-for="(item1,i1) in scope.row.children"
              :key="item1.id"
            >
              <!-- 一级权限 -->
              <el-col :span="5">
                <el-tag @close="remove(scope.row,item1.id)" closable>{{item1.authName}}</el-tag>
                <i class="el-icon-caret-right"></i>
                <!-- {{item1.children}} -->
              </el-col>
              <!-- 二级权限和三级权限 -->
              <el-col :span="19">
                <el-row
                  :class="[index2===0?'':'bdtop','vcenter']"
                  v-for="(item2,index2) in item1.children"
                  :key="item2.id"
                >
                  <el-col :span="6">
                    <el-tag
                      type="success"
                      @close="remove(scope.row,item2.id)"
                      closable
                    >{{item2.authName}}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>

                  <el-col :span="18">
                    <el-tag
                      @close="remove(scope.row,item3.id)"
                      type="warning"
                      v-for="item3 in item2.children"
                      :key="item3.id"
                      closable
                    >{{item3.authName}}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="角色名称" prop="roleName"></el-table-column>
        <el-table-column label="角色描述" prop="roleDesc"></el-table-column>
        <el-table-column label="操作" width="300px">
          <template slot-scope="scope">
            <el-button size="mini" type="primary" icon="el-icon-edit">编辑</el-button>
            <el-button size="mini" type="danger" icon="el-icon-delete">删除</el-button>
            <el-button size="mini" type="warning" icon="el-icon-setting" @click="showPower(scope.row)">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>

    <!-- 分配权限对话框 -->
    <el-dialog
      title="分配权限"
      :visible.sync="setRightDialogVisible"
      width="50%"
      @close="setRightDialogClose"
    >
      <!-- 树形组件
    show-checkbox:显示复选框
    node-key:设置选中节点对应的值
    default-expand-all:是否默认展开所有节点
    :default-checked-keys 设置默认选中项的数组
      ref:设置引用-->
      <el-tree
        :data="rightsList"
        :props="treeProps"
        show-checkbox
        node-key="id"
        default-expand-all
        :default-checked-keys="defKeys"
        ref="treeRef"
      ></el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      setRightDialogVisible: false,
      rolesList: [],
      rightsList: [],
      //树形控件的属性绑定对象
      treeProps: {
        label: "authName",
        children: "children"
      },
      defKeys:[],
      checkRolesID:''
    };
  },
  created() {
    this.getRolesList();
  },
  methods: {
    async getRolesList() {
      const { data: res } = await this.$http.get("roles");
      //    console.log(res);

      if (res.meta.status != 200) {
        return this.$message.error("角色列表获取失败");
      }
      this.rolesList = res.data;
      //    console.log(this.rolesList);
    },
    async remove(role, id) {
      console.log(id);
      console.log(role);

      const confirmResult = await this.$confirm(
        "请问是否要删除该权限",
        "删除提示",
        {
          confirmButtonText: "确认删除",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);
      //如果用户点击确认，则confirmResult 为'confirm'
      //如果用户点击取消, 则confirmResult获取的就是catch的错误消息'cancel'
      if (confirmResult != "confirm") {
        return this.$message.info("已经取消删除");
      }
      const { data: res } = await this.$http.delete(
        `roles/${role.id}/rights/${id}`
      );
      if (res.meta.status !== 200) {
        return this.$message.error("删除角色权限失败");
      }
      role.children = res.data;
    }, //展示权限的对话框
    async showPower(role) {
        this.checkRolesID=role.id
      const { data: res } = await this.$http("rights/tree");

      if (res.meta.status !== 200) {
        return this.$$message.error("获取权限失败");
      }
      this.rightsList = res.data;
    //    console.log(this.rightsList);

    this.getLeafKeys(role,this.defKeys)
      this.setRightDialogVisible = true;
    },
    getLeafKeys(node,arr){
        if(!node.children){
            return arr.push(node.id)
        }
        node.children.forEach(item => {
            this.getLeafKeys(item,arr)
        });
    },
    async allotRights() {
        ///:roleld 角色ID  
        var checkRoles=[
            ...this.$refs.treeRef.getCheckedKeys(),
            ...this.$refs.treeRef.getHalfCheckedKeys(),
        ]
        
        const idStr=checkRoles.join(',')
        console.log(idStr);
        console.log(this.checkRolesID);
        
         const {data:res} =await this.$http.post(`roles/${this.checkRolesID}/rights`,{rids:idStr})
         if (res.meta.status !== 200)
        return this.$message.error('分配权限失败')

         this.$message.success("分配权限成功")
         this.getRolesList()
          this.setRightDialogVisible = false;
    },
    setRightDialogClose(){
        this.defKeys=[]
    }
  }
};
</script>

<style lang="less" scoped>
.el-tag {
  margin: 7px;
}
.bdtop {
  border-top: 1px solid #eee;
}
.bdbottom {
  border-bottom: 1px solid #eee;
}
.vcenter {
  display: flex;
  align-items: center;
}
</style>